Clamping and squaring machine.



W. F. OHLRAU & G. K. NEHBR. 'QLAMPING AND SQUARING MACHINE. APPLICATIONFILED NOV. 27, 1911.

1,044,078. Patented N0v.12,1912. A I l 5 SHEETS-sum1.

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W. P. OHLRAU & G. K. NEHER.

GLAMPING AND SQUAEING MACHINE.

APPLIOATION FILED Nov. 27, 1911.

11,044,078. Patented Nov. 12,1912.

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W. P. OHLRAU & G. K. NEHER. A GLAMPING AND SQUARING MACHINE.

APPLICATION FILED NOV. 27, 1911.

Patented Nov. 12,191.2.v

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W. P. OHLRAU &YG. K. NEHER. "GLAMPING AND SQUARING MACHINE.

APPLICATION FILED NOV. 27, 1911.

1,044,078. I Patented N0v.12,1912.

5 SHEETS-SHEET 4.

W. P. OHLRAU & G. K. NEHER. GLAMPING ND SQUARING MACHINE;

APPLIOATION FILED Nov. 27, 1911.

Patented NOV. 12, 1912.

5 SHEETS-SHEET 5.

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WILLIAM F. OHLRAU' AND GEORGE K. NEHER, OF ALBUQUERQUE, NEW MEXICO.

CLAIVIPING AND SQUARING MACHINE.

To all whom it may concern:

Be it known that we, WILLIAM F. OHLRAU and GEORGE K. NEI-inn, citizensof the United States, residing at Albuquerque, in Athe county ofBernalillo and State of New Mexico, have invented certain new and usefulImprovements in Clamping and Squaring Machines, of which the followingis a specification, reference being had to the aocompanying drawings.

This invention relates to clamping and squaring machines for door,window or other frames made up of a plurality of ointed sections and theinvention has for its primary object to provide a very simple andetlicient machine of this character which will quickly and accuratelysquare the door or window and simultaneously clamp the frame sectionsthereof together.

Another object of the invention resides in the provision of means forautomatically moving the side and end clamping members alternately intoengagement with the door frame, said clamps irst acting upon the frameto partially join the sections thereof together, and then having asecond clamping action upon the frame to exert the final clampingpressure thereon and complete the joining of the frame sections.

A further object of the invention is to provide automatically actuatedhammers for creating additional pressure upon the side frame membersafter the clamps have completed their final clamping action andimmediately before their release from engagement with the door wherebyany tendency of the .frame to loo-sen at the joints thereof is overcome.

Still another object of the invention is to provide improved means forpositively actuating the clamping members and additional means foradjusting said members to receive Specication of Letters Patent.

Application filed November 2'?, 1911.

Patented Nov. 12, 1912.

Serial No. 662,650.

for; Figs. 5, 6, 7 and 8 are detail elevations showing the positions ofthe cam member actuating roller for the side clamp with relation to theactuating roller for the end clamp; Fig. 9 is a diagrammatic viewillustrating the eect of the successive actions of the clamping membersupon the door frame during one complete operation of the machine; andFig. 10 is a vertical section taken on the line l0-10 of Fig. 3.

The present invention is devised with a view to providing a simple,efficient and durable mechanism for facilitating the clamping togetherof the various sections of frame work such as is used in theconstruction of doors, windows and similar elements of buildingconstruction.

While we have illustrated in the accompanying drawings a machineVembodying such features of construction as will be hereinafter set forthemployed for the joining of door frames, it will be understood that thevarious parts thereof mav be so arranged and relatively proportionedthat the machine may be adapted to operation upon other framestructures. We also aim to provide a machine which will square the framewith absolute accuracy. The above ends are attained by means of theconstruction which will no-w be set forth in detail.

The frame-of the machine comprises the upwardly converging end bars 5which are arranged in spaced relation upon each end of a base plate 6and are rigidly secured thereto in any preferred manner. The upper endsof the rear vertical end bars 5 are forwardly inclined or angularlydisposed as indicated at 5 and secured to the upper ends of the frontbars, which, as shown are of considerably greater width than the rearbars for a purpose which will be hereinafter more fully disclosed.

To the lower ends of the front end bars 5 of the frame a horizontallydisposed supporting bar 7 is secured and one end thereof is angularlydisposed and upwardly eX- tended in parallel relation to the frame bar 5to provide the stationary end clamp 8. The other end of the supportingbar 7 eX- tends a considerable distance beyond the end of the frame andhas arranged thereon the movable end clamp 9. The bar 7 is provided uponits upper edge with a flange 7 beneath which the retaining plates orclips 10 which are secured to the clamp 9 engage. This end clampconsists of the horizontally disposed body plate 11 to one end of whichthe clamping bar 12 is rigidly secured. The stationary clamp 8 and thebar 12 are provided upon their inner faces with the projecting blocks 13which are adapted to engage upon the edges of the end sections of theframe between the longitudinal or side sections thereof as shown indotted lines in Fig. 1. A horizontally extending bar 14 is fixed at oneend to the frame and a rectangular sleeve 15 carried by the body plate11 of the clamp 9 is slidably engaged thereon.

The front vertically inclined end bars 5 of the frame are connected andbraced by means of the members 16 and upon these inclined frame bars theside clamping bar 17 is vertically movable. This bar is hung orsuspended from a horizontal beam 18 which also bears and is movable uponthe inclined frame bars rIhe clamping member 17 is adjustably connectedto the beam 18 by means of the rods 19 which are thread ed in sleeves 2Osecured to said beam. The lower ends of the rods 19 are rotatablymounted in the plates 21 by means of which they are connected to themember 17. Said rods have the miter gears 22 fixed upon their lowerends. A longitudinal shaft 23 is supported in the bearing plates 24 inparallel relation to the bar or member 17 and this shaft has fixed uponits ends the gears 25 which mesh with the gears 22. A short shaft 26 isalso mounted upon one end of the bar 17 in the bearing plates 27 andcarries a gear 28 to mesh with the gear 22 of one of the rods 19, saidgear 28 being disposed upon the opposite side of said rod with relationto the gear on the shaft 23. A crank handle 29 is fixed to the outer endof shaft 26. By this arrangement of parts it will be readily seen thatthe clamping bar 17 may be adjusted so that a door of any width may bepositioned between said bar and the supporting plate 7. This adjustmentis obtained by rotating shaft 26 whereby the rods 19 are rotated throughthe medium of the intermeshing gears or pinions and threaded through thesleeve 20. Means are also provided for adjusting the end clamp 9 uponthe supporting bar7 and this means consists of a threaded rod or shaft30 which is loosely mounted in a sup` port 31 fixed to the clamp 9. Theinner end of this shaft has threaded engagement in the member 32 carriedby the longitudinally disposed arm 34 of a cam member 33. The crankhandle 29 is adapted to be attached to the end of the shaft 30 to rotatesaid shaft and move the end clamp 9 along the supporting bar 7. The cammember 33 is for the purpose of moving the end clamp 9 into and out ofclamping engagement with the end of the door frame and similar cammembers 35 are also provided for moving the side clamping bar 17 in avertical plane.

The manner in which these clamping members are actuated through themedium of the cam members 33 and 35 is substantially as follows. Acountershaft 36 is arranged at the rear and to one side of the mainframe and is mounted in a bearing 37 which is braced and supported fromthe main frame by means of the bar 38. A drive pulley and clutch arefitted upon the countershaft, and this pulley is connected by means ofan endless driving belt 39 to the band wheel 40 fixed upon the end of ashaft 41 mounted in suitable bearings upon a supporting plate 42 securedto one end of the main frame. It will be understood that thecountershaft may be driven by means of a motor or from any othersuitable source of power. Upon the shaft 41 a pinion 43 is fixed andmeshes with a large gear wheel 44 secured upon a shaft 45 mounted inbearings arranged upon the upper ends of the rear frame bars 5. Thisshaft also carries power transmitting gears or pinions 46 which meshwith the teeth of the gear wheels 47 fixed upon the opposite ends of alongitudinal shaft 48 which is mounted in bearings 49 formed upon theupper ends of the front frame bars 5. The upper ends of these frame barsare connected by means of the horizontal bar 50 which is provided in itsends with guide openings to receive the upwardly extending arms 35 ofthe cam members 35. The downwardly extending arms 35a of these cammembers are connected to reduced studs or extensions formed on the endsof the beam 18. It will be observed from reference to Fig. 1 that thecam members 35 are located adjacent to the outer faces of the gearwheels 47. Said cam members are of a general elliptical shape, the majoraxis thereof being disposed transversely of t-he machine. A pin 51 iseccentrically secured to each of the gears 47, being fixed in one of thearms or spokes thereof. Upon these pins rollers 52 are rotatably mountedand these rollers extend into the openings 53 in the cam members andmove upon the walls thereof.

A yoke 54 is provided with bearings 54 upon its ends to receive thelongitudinal shaft 48. This yoke is also provided with a centralvertically disposed bearing 55 to receive the upper end of aperpendicular shaft 56. Upon the upper end of this latter shaft abeveled gear 57 is secured which meshes with a similar gear 58 fixedupon the shaft 48. The lower end of the perpendicular shaft 56 isjournaled in the base plate 6 of the frame and a crank arm 59 Vissecured thereon, said arm being movable in the circular recess 60provided in the upper face of the base plate 6. The free end of this armcarries a pin 61 upon which the roller 62 is loosely mounted, saidroller being disposed within the opening 63 of the cam member 33 andmovable upon the walls thereof. The cam member is further provided withan arm 64 which extends in an opposite direction to the arm 34 formedupon said cam member. These arms are movable in the guides 65 securedupon the base plate 6. A yoke arm 66 extends laterally from one of theguides 65 and in this arm the lo-wer end of the shaft 56 is rota tablymounted.

A longitudinal rod or bar 69 is fixed upon transverse brace barsconnecting the end frame bars 5 and the shaft 56 is embraced by aU-shaped plate 7 O which is fixed at its ends to said bar. This platesurrounds the shaft 56 at a point intermediate of its ends and furtherserves to hold the shaft in its perpendicular position and relieve theparts of undue wear. The clutch shifting lever 71 is pivotally mountedupon one end of the bar 69.

The operation of the machine as thus far described will be understoodupon reference to Figs. 5 to 8 inclusive. The sections of the door frameare provided with mortises and tenons in the yusual manner and inDiagram A of Fig. 9 I have shown the parts of the frame assembled inproper position to be joined. 1t will of course be understood that themortises and tenons are provided with a coating of glue or otheradhesive material. After the frame elements have thus been assembled,they are placed in the machine with one of the longitudinal members Fresting upon the upper edge of the longitudinal supporting bar 7. Thecrank rollers 52 carried-by the gear wheels 47 are now in the posit-ionwith relation to the wall of the opening in the cam members 35 as shownin Fig. 5 and the crank roller 62 is in the position shown in Fig. 7. Inthese positions of the rollers 52 and 62, the clamping members 9 and 17are fully opened so that a door of the proper width and length inaccordance with the adjustments which have been made to the clampingmembers, may be received upon the frame as shown in Fig. 1. Now whenpower is applied to the countershaft 36 and transmitted to shaft 4Sthrough the medium of the gearing hereinbefore referred to. theperpendicular shaft 56 is also rotated and the crank arm on the lowerend thereof moves the roller 62 upon the wall of the opening in the cammember 33 and when the same reaches the point designated 72, theclamping pressure of the movable clamp 9 upon the end of the door framebegins and the end members F of theframe are forced inwardly and arejoined to the central longitudinal members F2 between which the panelsof the door are to be set, to within about one-sixteenth of an inch ofcompletion as shown in Diagram B of 9. Now when the crank roller 62reaches the recess 73 in the wall of the cam opening and i moves int-othe same, the clamping operation upon the` ends of the frame istemporarily suspended during the time that the roller travels thro-ughthis space. The rollers 52 upon the gears 47 are just leaving the pointdesignated SO on the wall of the opening in the cam members 35,- whenthe roller 62 enters the recess 73 in the cam member 33. When the crankrollers 52 reach the recesses 8l in cam members 35, the clamping bar 17has been moved downwardly into engagement with the upper frame member Fof the door and has partially clamped the longitudinal frame members tothe transverse members F so that the door fame is now in the conditionshown in Diagram B of Fig. 9. Simultaneously with the entrance of therollers 52 in the recess Sl of cam members 35, the crank roller 62leaves the recess 73 in cari member 33 and mounts the face of the camopening 63 at the point 75 which is disposed out of the plane of thepoint 74rat the opposite end of said recess, or inwardly thereof. Thisrelative disposition of the points 74E and 75 with relation to the arcdescribed by the roller, in the present instance amounts toone-sixteenth of an inch, though it will be understood that thisdifference may be varied as desired.V

This inward extension of the cam wall on one side of the recess ismaintained between the points 75 and 76 with relation to said wall onthe oppo-site side of t-he recess bew tween the points 72 and 74 so thatduring the travel of the roller 62 between points 7 5 and 76, there is afurther inward movement of the end clamping member 9 and the clamping ofthe end members of the door frame and the .central transverse member tothe central longitudinal member F2 is completed as shown in Diagram C.Fig. 9. Immediately upon the completion of the inward movement of theend clamp, the rollers 52 are leaving the recesses 31 and mount the wallof the cam opening at the point which is disposed inwardly with relationto the point 83 at the opposite end of said recess in a similarinannerto the relative disposition of the points 74 and 75 of cam member 33.The movement of the rollers 52 upon the innermost port-ions of the camwall opening between points 82 and 84- completes the downwardj movementof the clamping bar 17 so that the longitudinal frame members F areclamped tightly against the end and intermediate frame members l?" andthe door frame is now in the condition shown in Diagram D of Fig.

`When the crank roller 62 is disposed in the end of the cam opening atthe point 76, the movement of the clamping member 9 is reversed andpressure upon the ends of the door frame is removed, said clampingmember remaining in an ineffective position until the crank rollerreaches the point 77 at the opposite end of the cam opening when itagain begins to move inwardly toward the end of the door frame. Then therollers 52 carried by the gears 47 reach the point S5 in one end of thecam openings, pressure of the bar 17 upon the longitudinal frame membersis released, said bar remaining in its open position until the rollersarrive at the point S6 at the opposite end of the cam members. In thismanner one cycle of the operation is completed.

In order to overcome any resistance which might exist and to prevent thejoints of the frame from opening when the clamping pressure is released,we provide a pair of au tomatic hammers which are indicated at 90. Thesehammers are mounted upon the beam 18 and are movable thereon upon theshort vertical' guide rods 91. Additional vertical rods 92 are rigidlysecured at their lower ends to the beam 1S and extend vertically throughopenings in the hammers 90. The upper ends of these rods are providedwith the heads 93 between which and the upper.

surfaces of the hammers the heavy coil springs 94e are arranged. To therear edges of the hammer blocks t-he upwardly extend ing arms 95 aresecured, and said arms are provided upon theirl upper ends with shoulders 9G to be engaged by the arms 97 rigidly fixed on the shaft 18.While the rollers 52 are moving between the points 83 and 841; of theirrespective cam members, the arms 97 are engaged with the upper ends ofthe arms 95 and are moving the same upwardly, thereby lifting the hammerblocks 90 and placing the coil springs 94 under tension. Then therollers 52 reach the points 84, the hammers are released and the springs9st force the same downwardly upon the upper edge of the beam 18 anddeliver a heavy blow upon the ends of said beam which is transmittedthrough the rods 19 to the longitudinal clamping bar 17. The work isthus finally set up before the complete release of the clamping members.

From the foregoing it is thought that a complete understanding of theconstruction and manner of operation of our improved squaring andclamping machine can be obtained. The device is entirely automatic inits action and the clamping and squaring of the door frame is quicklyand efficiently performed in a remarkably short space of time.Qrdinarily about 25 seconds will be consumed in the travel of the camrollers 52 from the points 85 to 8G which will allow ample time for thework Vto be removed and replaced by a new piece. Owing to the fact thatthe clamping members are alternately engaged with the work instead ofsimultaneously as in the ordinary machine of this character, the actionof one of said members will not counteract the clamping action of theother member so that a very tight oint is obtained. By our improved formof the cam members the relative opening and closing movement of theclamping members is properly timed and by providing means whereby thesemembers may be readily adjusted, the machine is capable of operatingupon door frames and similar work of various dimensions.

While we have shown and described the preferred form and constructionofthe various elements, it will be understood that our machine issusceptible of considerable modiiication in this respect withoutdeparting from the essential feature or sacrificing any of theadvantages thereof.

Having thus described the invention what is claimed is 1. In a machinefor setting up frames, a vertically movable clamping member, a laterallymovable clamping member, and means for successively moving each of saidmembers and alternately with respect to each other to exert a series ofclamping pressures upon the work.

2. In a machine for setting up frames, a vertically movable clampingmember, a laterally movable clamping member, and means for automaticallyimparting to each of said clamping members an initial clamping movementand an additional completing clamping movement.

3. In a machine for setting up frames, a vertically movable clampingmember, a laterally movable clamping member, and means for automaticallyimparting to each of said clamping members an initial clamping movementand an additional completing clamping movement alternately with relationto each other.

4L. In a machine for setting up frames, a movable member for clampingengagement upon the work, an operating shaft therefor, cam membersconnected to said clamping member, and eccentrically disposed elementscarried by the shaft to coperate with said cam members and effect aseries of successive clamping movements of said clamping member.

5. In a machine for setting up frames, a movable clamping member andmeans for temporarily suspending the clamping action of said member at apoint intermediate of the extremes of its movement, and anautfnnatically actuated hammer co-aeting with said clamping bar tocreate a pressure of the same upon the worlr at the end of its elampingmovement.

t5. In a machine for setting up frames, a movable clamping member andmeans for temporarily suspending the clamping action cf said member at apoint intermediate of the extremes of its movement, and a springactuated hammer co-acting with said clamp` ing bar to create a pressureof the same Crt upon the Work at the end of its clamping movement.

7. ln a machine for setting up frames, stationary and movable clampingmembers, and cam actuated means for alternately moving the movableclamping members into engagement With the Work.

8. In a machine for setting up frames, stationary and movable clampingmembers, one of said stationary members constituting a support for theWork, and means for alternately moving the movable clamping members intoengagement With the Work.

9. ln a machine for setting upframes, a

,n stationary clamping member, said member also constituting a supportfor the Work, a laterally movable clamping member arranged upon saidstationary member, a vertically movable clamping member, and means foralternately movingsaid movable clamping members into engagement With theWork.

l0. ln a machine for setting up frames, a Work support, a clamping barto engage the Work, means for moving said bar into and out of clampingengagement with the Work, and automatically operating hammers to delivera blow to said clamping bar immedi ately before the bar is released fromengagement with the Work.

l1. In a machine for setting up frames, a support for the Work, amovable member' to engage the work arranged in parallel relation to thesupport, an operating shaft, eccentric connections betvveen said movablemember and the shaft to move said member into engagement with the Work,a hammer to deliver a blow to said movable member and cause the same toexert additional pressure upon the work, and means on said operatingshaft co-acting with the hammer to automaticallyT actuate the same.

12. In a machine for setting up frames, a horizontal Work support, avertically mov- Y able beam arranged in parallel relation thereto, aclamping bar carried by the beam, means for adjusting said bar withrelation thereto, means connecting said beam at its ends to theoperating shaft to reciprocate the beam and engage and disengage theclamping bar with the Worlnapair of spring pressed hammers mounted uponthe beam, and means arranged on the operating shaft co-acting with thehammers to actuate the same and effect an additional pressure of theclamping bar upon the Work immediately prior to its disengagementtherefrom.

13. ln a machine for setting up frames, a Work support, a verticallymoving clamping member arranged above the support, a laterally movingclamping member mounted on the support, an operating shaft, meansco-nnecting said vertically movable member to the shaft includingmembers having cam openings therein, eccentric rollers engaging in saidcam openings to co-act With said members and move the clamping bar toengage and disengage the same with the Work, a perpendicular shaftgeared to said operating shaft, and means connecting the perpendicularshaftwith said laterally movable clamping member whereby said lattermember is alternately moved into and out of engagement with the Workwith respect to said vertically movable member.

14. ln a machine for setting up frames, a combined stationary clamp andWork support, a vertically movable clamping member arranged above thesupport, a laterally movable clamping member mounted on the support, anoperating shaft, eccentrically disposed rollers arranged upon the endsof said shaft, means connecting said' vertically movable clamping memberwith the shaft including members arranged at each end of the shaft andhaving cam openings to receive said rollers, a guide for said members,each of the cam openings having a recess in its Wall to receive saidrollers whereby the clamping movement of said vertically movable memberis temporarily suspended, and means geared to the operating shaft andactuated thereby to impart an interrupted clamping movement to saidlaterally movable member alternately with regard to the movements ofsaid first named member.

15. In a machine for setting up frames, a Work support, a verticallymovable clamping member for the Work, an operating shaft, meansconnecting said clamping member to the shaft including cam members eachhaving an opening therein, rollers eccentrically disposed with relationto the shaft and carried thereby, said rollers engaging the Walls of theopenings in said cams whereby an initial clamping movement is impartedto said clamping member, the Walls of the cam openings being eachprovided With a recess to receive said rollers whereby the movement ofthe clamping member is temporarily suspended, said recess being of suchform and so disposed With relation to the ends of the cam opening thatthe movement of said rollers out of the recesses and upon the Walls ofthe openings on the opposite sides thereof effects a greater and furtherdownward movement of the clamping member upon the Work.

16. ln a machine for setting up frames, a Work support, a movableclamping member to engage the Work, a rotatable shaft and means foractuating the same, connections between said member and the shaftwhereby the clamping member is moved into and out of engagement with theWork, said connections including a member having a cam opening therein,a roller carried by the shaft engaging the Wall of said opening, saidWall being of such contour that an initial clamping movement is impartedto the clamping member, such movement being temporarily suspended and afinal and further clamping movement thereafter imparted to said member.

17. In a door squaring and clamping` machine, a combined support andstationary end and side clamp for the door, relatively movable end andside clamps, and means for automatically imparting successive clampingmovements to said latter clamps alternately With respect to each other.

18. In a door squaring and clamping machine, a combined support andstationary end and side clamps for the door, relatively movable end andside clamps, means for adjusting the latter clamps with respect to eachother, means for automatically imparting an alternate clamping movementto the movable clamps, and additional means automatically actuated atthe end of the clamping movement of said side clamp to create anadditional pressure of said clamp upon the door frame.

In testimony whereof We hereunto afliX our signatures in the presence oftwo Witmesses.

WILLIAM F. OHLRAU. GEORGE K. NEHER.

Vit-nesses:

O. M. MARRON, FRANCIS E. WooD.

Copies of this patent may be obtained for ve cents each, by addressingthe Commissioner of Patents, Washington, ID. C.

